linux-kernel - Re: [PATCH] x86: tighten kernel image page access rights

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Message-Id: <200703282107.11511.ak@suse.de>
Date:	Wed, 28 Mar 2007 21:07:11 +0200
From:	Andi Kleen <ak@...e.de>
To:	"Jan Beulich" <jbeulich@...ell.com>
Cc:	linux-kernel@...r.kernel.org, patches@...-64.org
Subject: Re: [PATCH] x86: tighten kernel image page access rights


> +#ifdef CONFIG_HOTPLUG_CPU
> +	/* It must still be possible to apply SMP alternatives. */
> +	if (num_possible_cpus() <= 1)

It would be better to temporarily change the pages where the alternatives
are applied while that is done and keep it otherwise ro

-Andi
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